Yamaha KODIAK ULTRAMATIC YFM400FA Owner's Manual page 407

Model
Spark plug:
Type/manufacturer
Spark plug gap
Clutch type
Transmission:
Primary reduction system
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Reverse gear
Sub transmission ratio
Chassis:
Frame type
Caster angle
Trail
Tire:
Type
Size
DR8EA-9 / NGK
0.6 ~ 0.7 mm
Wet, centrifugal automatic
V-belt
Spur gear
39/24 × 24/18 × 33/9 (7.944)
V-belt automatic
Left hand operation
29/17 (1.706)
low 45/16 (2.813)
high 38/23 (1.652)
Steel tube frame
4˚
21 mm
Tubeless
AT25 ×
(front)
AT25 × 10 - 12
(rear)
10-4
YFM400FA / YFM400FWAN
8 - 12